CN115717555A - Gas inlet device of gas and steam combined cycle unit - Google Patents
Gas inlet device of gas and steam combined cycle unit Download PDFInfo
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- CN115717555A CN115717555A CN202211404358.1A CN202211404358A CN115717555A CN 115717555 A CN115717555 A CN 115717555A CN 202211404358 A CN202211404358 A CN 202211404358A CN 115717555 A CN115717555 A CN 115717555A
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- 239000003546 flue gas Substances 0.000 description 9
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 208000035217 Ring chromosome 1 syndrome Diseases 0.000 description 1
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- 239000003086 colorant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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Abstract
The invention discloses an air inlet device of a gas-steam combined cycle unit, which comprises a preheating mechanism, a preheating mechanism and a steam-steam combined cycle unit, wherein the preheating mechanism comprises a main pipe part, a heat exchange part arranged on the inner side of the main pipe part, and a gas exchange part connected with the heat exchange part; and the circulating suction mechanism comprises a circulating shielding part arranged on the inner side of the main pipe part, an air inlet branch part connected with the circulating shielding part, and a centralized part connected with the air inlet branch part. When the air outlet corresponds to the outlet of one or two heat exchange cavities, the heated air in the corresponding heat exchange cavity is pumped into the inner side of the concentration part through the air inlet branch part, the air pressure in the inner side of the heat exchange cavity is reduced, the external air is supplemented into the inner side of the heat exchange cavity through the air inlet, other heat exchange cavities which do not correspond to each other are respectively blocked by the air inlet blocking ring and the air outlet blocking ring, the heat exchange tube continuously heats the air in the heat exchange cavity, the heating time of the air is further prolonged, and the good air heating effect is kept.
Description
Technical Field
The invention relates to the technical field of gas-steam combined cycle units, in particular to an air inlet device of a gas-steam combined cycle unit.
Background
The gas-steam combined cycle generator set has the advantages of high efficiency, low consumption, quick start, flexible adjustment, high availability ratio, investment saving, short construction period, small environmental pollution and the like, and is increasingly valued and developed in foreign power industries.
In the prior art, when a gas-steam combined cycle unit operates at a partial load, the gas-steam combined cycle unit operates by utilizing heated air, so that the total output of a combined cycle is unchanged, but the load rate of the gas-steam combined cycle unit is increased and the efficiency is improved, thereby improving the efficiency of the gas-steam combined cycle unit and reducing the natural gas consumption, but the problem of short air heating time is caused when the gas inlet speed of the gas-steam combined cycle unit is high, and especially in the weather with low air temperature, the problem of insufficient air heating can be caused by short heating time
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The invention is provided in view of the problem that the air heating time of the air inlet device of the existing gas-steam combined cycle unit is short.
Therefore, the invention aims to provide an air inlet device of a gas-steam combined cycle unit.
In order to solve the technical problems, the invention provides the following technical scheme: an air inlet device of a gas-steam combined cycle unit comprises,
the preheating mechanism comprises a main pipe part, a heat exchanging part arranged on the inner side of the main pipe part, and a gas exchanging part connected with the heat exchanging part; and the number of the first and second groups,
the circulating suction mechanism comprises a circulating shielding part arranged on the inner side of the main pipe part, an air inlet branch part connected with the circulating shielding part, and a centralized part connected with the air inlet branch part.
As a preferable aspect of the air inlet device of the gas-steam combined cycle unit of the present invention, wherein: the heat exchange part comprises a plurality of heat exchange cavities arranged on the inner side of the main pipe part and heat exchange pipes arranged on the inner side of the heat exchange cavities;
the gas exchange part comprises a hot gas piece communicated with one end of the heat exchange tube and a cold gas piece communicated with the other end of the heat exchange tube;
one end of the heat exchange cavity is provided with an inlet, and the other end of the heat exchange cavity is provided with an outlet.
As a preferable aspect of the air inlet device of the gas-steam combined cycle unit of the present invention, wherein: the hot air part comprises a hot air main pipe, a plurality of hot air branch pipes arranged on the hot air main pipe and a hot air port arranged on the hot air main pipe;
the cold air part comprises a cold air main pipe, a plurality of cold air branch pipes arranged on the cold air main pipe, and a cold air port arranged on the cold air main pipe;
the heat exchange tube is communicated with the hot air main pipe through the hot air branch pipe, and the heat exchange tube is communicated with the cold air main pipe through the cold air branch pipe.
As a preferable aspect of the air intake device of the gas-steam combined cycle unit of the present invention, wherein: the circulating shielding part comprises a main shaft, an air inlet shielding ring, an air outlet shielding ring and a driving motor;
the main shaft is arranged on the inner side of the main pipe part and can rotate;
the air inlet shielding ring is arranged on the outer side of the main shaft, is attached to an inlet of the heat exchange cavity and is provided with an air inlet;
the air outlet shielding ring is arranged on the outer side of the main shaft, is attached to the discharge port of the heat exchange cavity and is provided with an air outlet;
the driving motor is arranged on the inner side of the main pipe part and is in transmission connection with the main shaft.
As a preferable aspect of the air intake device of the gas-steam combined cycle unit of the present invention, wherein: the air inlet position corresponds to the air outlet position, the air outlet blocking ring is provided with a connecting pipe at each air outlet, and the connecting pipes are communicated with the concentration part.
As a preferable aspect of the air intake device of the gas-steam combined cycle unit of the present invention, wherein: the connecting pipe is connected with the air outlet through a filtering mechanism; the filtering mechanism comprises a filter body and a filter cover,
a positioning tube portion fixed to the air outlet;
a rotating pipe portion provided inside the positioning pipe portion and capable of rotating;
a drive gear provided on the rotating tube portion;
a filter net arranged inside the rotating pipe part;
the inner side of the main pipe part is provided with an arc rack
As a preferable aspect of the air intake device of the gas-steam combined cycle unit of the present invention, wherein: the positioning pipe part comprises a fixed pipe end fixed on the air outlet and an expansion pipe end formed on the fixed pipe end;
the rotating pipe part comprises a built-in end sleeved on the inner side of the positioning pipe part, an extending edge formed on the outer side of the built-in pipe end and a connecting end formed at the end part of the built-in pipe end;
the built-in end is provided with a leak groove at the end of the expansion pipe, the extension edge is provided with a circular groove, one end of the expansion pipe end extends to the inner side of the circular groove, and one end of the connecting pipe is connected with the connecting end.
As a preferable aspect of the air intake device of the gas-steam combined cycle unit of the present invention, wherein: the expansion pipe end is provided with a discharge groove, and the outer side of the built-in end is provided with a discharge piece.
As a preferable aspect of the air intake device of the gas-steam combined cycle unit of the present invention, wherein: the discharging piece comprises an upright post fixed on the outer side of the built-in end, a sleeve slidably sleeved on the outer side of the upright post, a rubber plug arranged at the end part of the sleeve, and a spring sleeved on the outer side of the upright post;
the spring is positioned between the sleeve and the outer wall of the built-in end, and one side, away from the sleeve, of the rubber plug is an arc surface.
As a preferable aspect of the air intake device of the gas-steam combined cycle unit of the present invention, wherein: the concentration portion includes a plurality of concentration portions,
the centralized pipe is arranged at one end of the main shaft, two limiting rings are arranged on the inner side of the centralized pipe, and a connecting port is formed in the side wall of the centralized pipe;
the semi-through pipe is sleeved on the inner side of the concentration pipe and positioned between the two limiting rings, an arc penetrating groove is formed in the outer side of the semi-through pipe, and a positioning end is arranged on one side of the semi-through pipe;
half siphunculus lateral wall and the laminating of concentrated pipe inside wall.
The invention has the beneficial effects that: through setting up preheating mechanism and circulation suction mechanism, through the rotation of driving motor, can drive the main shaft and rotate, through the rotation of main shaft, can drive simultaneously and admit air and shelter from the ring rotation of giving vent to anger, the conversion position that the air inlet does not stop along with the rotation of admitting air and shelter from the ring, the conversion position that the rotation of the ring is sheltered from along with giving vent to anger also to the gas outlet does not stop along with the rotation of the ring, the position of air inlet and gas outlet corresponds all the time, when the gas outlet corresponds with the discharge port position of one of them or two heat transfer chamber wherein, the air that the heat transfer chamber inboard that corresponds is heated is sucked to the inboard of concentration portion through the branch portion that admits air, the atmospheric pressure of heat transfer chamber inboard reduces, outside air passes through the air inlet and mends the inboard of heat transfer chamber, other heat transfer chambers that do not correspond, inlet port and discharge port are blocked by the ring that admits air and the shelter from the ring that gives vent to anger respectively, the heat exchange tube is inside air continuously heated, and then the time of extension air, make in the colder weather, keep better air rising temperature effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a schematic view of the overall structure of an air inlet device of the gas-steam combined cycle unit.
Fig. 2 is a schematic view of the overall internal structure of the air inlet device of the gas-steam combined cycle unit.
Fig. 3 is a schematic structural diagram of a circulating suction mechanism of the air inlet device of the gas-steam combined cycle unit.
Fig. 4 is a schematic structural diagram of a filtering mechanism of an air inlet device of the gas-steam combined cycle unit.
Fig. 5 is an exploded view of the structure of the filter mechanism of the air inlet device of the gas-steam combined cycle unit according to the present invention.
Fig. 6 is a schematic structural diagram of a main pipe part and a heat exchange cavity of the air inlet device of the gas-steam combined cycle unit.
Fig. 7 is a schematic view of a structure of a central portion of an air inlet device of the gas-steam combined cycle unit.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Furthermore, the present invention is described in detail with reference to the drawings, and in the detailed description of the embodiments of the present invention, the cross-sectional view illustrating the structure of the device is not enlarged partially according to the general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Example 1
Referring to fig. 1, a schematic diagram of an overall structure of an air inlet device of a gas-steam combined cycle unit is provided, and as shown in fig. 1, the air inlet device of the gas-steam combined cycle unit includes a preheating mechanism 100 including a main pipe portion 101, a heat exchange portion 102 disposed inside the main pipe portion 101, and a gas exchange portion 103 connected to the heat exchange portion 102; and the circulation suction mechanism 200, including locating the circulation shielding part 201 inside the main pipe part 101, the branch portion 202 of admitting air that links to each other with the circulation shielding part 201, and the centralizing part 203 that links to each other with the branch portion 202 of admitting air, the inside of heat transfer portion 102 is sent into with the flue gas that the gas exchange portion 103 is higher in temperature, make the temperature of the inside air of heat transfer portion 102 rise, through the air of different positions of the inside of the heat transfer portion 102 of circulation suction mechanism 200, the inside air of heat transfer portion 102 space that is not absorbed is the steady temperature rising state, and then increase the time that the air is heated, make in the colder weather, keep better air temperature raising effect.
Specifically, the concentration portion 203 is connected to an air inlet of a gas-air suction mixing device of the gas-steam combined cycle unit, and heated air passes through the air inlet branch portion 202 to the inner side of the concentration portion 203, is finally sucked into the inner side of the air inlet mixing device through the concentration portion 203, and is mixed with gas and combusted in the inner side of the air inlet mixing device.
Further, the heat exchange part 102 includes a plurality of heat exchange cavities 102a disposed inside the main pipe part 101, and heat exchange pipes 102b disposed inside the heat exchange cavities 102 a; the gas exchange part 103 includes a hot air part 103a communicating with one end of the heat exchange pipe 102b, and a cold air part 103b communicating with the other end of the heat exchange pipe 102b; one end of each heat exchange cavity 102a is provided with an inlet 102a-1, the other end is provided with an outlet 102a-2, the inner side of each heat exchange cavity 102a is provided with a heat exchange pipe 102b, when gas and air of the gas and steam combined cycle unit are sucked into the mixing device to suck away air on the inner side of the concentration part 203, the air pressure on the inner side of the concentration part 203 is reduced, external air enters the inner side of the heat exchange cavity 102a through the inlet 102a-1, and heated air on the inner side of the heat exchange cavity 102a reaches the inner side of the concentration part 203 through the air inlet branch part 202.
In the working process of the gas-steam combined cycle unit, a large amount of high-temperature flue gas is generated by gas combustion, the hot gas piece 103a is connected with the high-temperature flue gas discharge port 102a-2, the high-temperature flue gas is conveyed to the inner side of the heat exchange tube 102b, the high-temperature flue gas on the inner side of the heat exchange tube 102b passes through the heat exchange tube 102b and transfers heat to air on the inner side of the heat exchange cavity 102a, and along with the fact that new flue gas enters the inner side of the heat exchange tube 102b through the hot gas piece 103a, the flue gas on the inner side of the heat exchange tube 102b is discharged through the cold gas piece 103b, so that the heat exchange tube 102b is always kept at high temperature.
In this embodiment, the number of heat exchange cavities 102a is 8, 8 heat exchange cavities 102a are circumferentially distributed on the inner side of main pipe portion 101, and each heat exchange cavity 102a is attached to another cavity.
Further, the hot gas component 103a comprises a hot gas main pipe 103a-1, a plurality of hot gas branch pipes 103a-2 arranged on the hot gas main pipe 103a-1, and hot gas ports 103a-3 arranged on the hot gas main pipe 103 a-1; the cold air member 103b comprises a cold air main pipe 103b-1, a plurality of cold air branch pipes 103b-2 arranged on the cold air main pipe 103b-1, and a cold air opening 103b-3 arranged on the cold air main pipe 103 b-1; the heat exchange pipe 102b is communicated with a hot gas main pipe 103a-1 through a hot gas branch pipe 103a-2, the heat exchange pipe 102b is communicated with a cold gas main pipe 103b-1 through a cold gas branch pipe 103b-2, a hot gas piece 103a is connected with a pipe 202a through a hot gas opening 103a-3 and is connected with a smoke exhaust channel of the gas-steam combined cycle unit through a pipeline, and air with higher temperature is dispersed to the inner sides of the heat exchange pipes 102b through the pipeline and the hot gas piece 103 a.
Wherein, the flue gas inside the hot gas main pipe 103a-1 is continuously dispersed to the inner sides of the heat exchange pipes 102b through the hot gas branch pipes 103a-2, the flue gas inside the heat exchange pipes 102b is intensively arranged at the inner sides of the cold gas main pipe 103b-1 through the cold gas branch pipes 103b-2, and finally discharged, wherein the number of the hot gas branch pipes 103a-2, the number of the cold gas branch pipes 103b-2 and the number of the heat exchange pipes 102b are 8.
Further, the circulating shielding part 201 includes a main shaft 201a, an air inlet shielding ring 201b, an air outlet shielding ring 201c, and a driving motor 201d; a main shaft 201a provided inside the main pipe portion 101 and rotatable; the air inlet shielding ring 201b is arranged on the outer side of the main shaft 201a, is attached to an inlet 102a-1 of the heat exchange cavity 102a and is provided with an air inlet 201b-1; the air outlet shielding ring 201c is arranged on the outer side of the main shaft 201a, is attached to the outlet 102a-2 of the heat exchange cavity 102a, and is provided with an air outlet 201c-1; the driving motor 201d is arranged on the inner side of the main pipe part 101 and is in transmission connection with the main shaft 201a, in the whole rotating process, the main shaft 201a can be driven to rotate through the rotation of the driving motor 201d, the air inlet shielding ring 201b and the air outlet shielding ring 201c can be driven to rotate simultaneously through the rotation of the main shaft 201a, the air inlet 201b-1 is in a position switching state which is not stopped along with the rotation of the air inlet shielding ring 201b, the air outlet 201c-1 is also in a position switching state which is not stopped along with the rotation of the air outlet shielding ring 201c, the positions of the air inlet 201b-1 and the air outlet 201c-1 are always corresponding, when the positions of the air outlet 201c-1 and the position of the air outlet 102a-2 of one or two heat exchange cavities 102a correspond, the heated air on the inner side of the corresponding heat exchange cavity 102a is pumped into the inner side of the concentration part 203 through the air inlet branch part 202, the air pressure on the inner side of the heat exchange cavity 102a is reduced, and the external air is supplemented into the inner side of the heat exchange cavity 102a through the air inlet 201 b-1.
The inner side of the main pipe part 101 is provided with a mounting rod, the mounting rod is provided with a sleeve hole, the main shaft 201a is sleeved on the inner side of the mounting rod through the sleeve hole and can rotate, the axis of the main shaft 201a is overlapped with the axis of the main pipe part 101, when the air inlet 201b-1 and the air outlet 201c-1 rotate, the main shaft 201a rotates around the axis of the main shaft 201a, the positions of the main shaft 201a and the heat exchange cavities 102a circularly correspond to each other, air on the inner side of the corresponding heat exchange cavity 102a is extracted, other heat exchange cavities 102a which do not correspond to each other, the air inlet 102a-1 and the air outlet 102a-2 are blocked by the air inlet blocking ring 201b and the air outlet blocking ring 201c respectively, the heat exchange tubes 102b continuously heat air on the inner side, and further prolong the heated air time, so that a better air temperature rising effect is kept in the cold weather.
The air inlet 201b-1 corresponds to the air outlet 201c-1, the air outlet blocking ring 201c is provided with a connecting pipe 202a at each air outlet 201c-1, the connecting pipe 202a is communicated with the concentration portion 203, when the air at the inner side of the concentration portion 203 is sucked into the mixing device by the gas air of the gas-steam combined cycle unit, the air pressure at the inner side of the concentration portion 203 is reduced, and the air heated at the inner side of the heat exchange cavity 102a is sucked into the inner side of the concentration portion 203 through the connecting pipe 202 a.
The operation process is as follows: the spindle 201a can be driven to rotate by the rotation of the driving motor 201d, the air inlet shielding ring 201b and the air outlet shielding ring 201c can be driven to rotate simultaneously by the rotation of the spindle 201a, the air inlet 201b-1 is in a position switching which does not stop along with the rotation of the air inlet shielding ring 201b, the air outlet 201c-1 is in a position switching which does not stop along with the rotation of the air outlet shielding ring 201c, the positions of the air inlet 201b-1 and the air outlet 201c-1 are always corresponding, when the positions of the air outlet 201c-1 and the positions of the exhaust port 102a-2 of one or two of the heat exchange chambers 102a correspond, the heated air inside the corresponding heat exchange chamber 102a is pumped into the inner side of the concentration part 203 through the air inlet branch part 202, the air pressure inside the heat exchange chamber 102a is reduced, and the outside air is supplemented into the inner side of the heat exchange chamber 102a through the air inlet 201 b-1.
Other heat exchange cavities 102a which do not correspond to each other, the inlet 102a-1 and the outlet 102a-2 are respectively blocked by the air inlet blocking ring 201b and the air outlet blocking ring 201c, and the heat exchange tubes 102b continuously heat the air inside the heat exchange tubes, so that the heating time of the air is prolonged, and a good air temperature-raising effect is kept in the cold weather.
Example 2
Referring to fig. 1-6, this embodiment differs from the first embodiment in that: the connecting pipe 202a and the air outlet 201c-1 are connected through a filter mechanism 300; the filter mechanism 300 includes a positioning pipe portion 301 fixed to the outlet port 201c-1; a rotatable tube portion 302 provided inside the positioning tube portion 301 and rotatable; a drive gear 303 provided on the rotating pipe portion 302; the filtering net 304 is arranged inside the rotating pipe portion 302, the inner side of the main pipe portion 101 is provided with the arc rack 101a, in the rotating process of the air outlet blocking ring 201c, when the filtering mechanism 300 reaches the corresponding position of the arc rack 101a, the driving gear 303 rotating by taking the spindle 201a as the axis contacts the arc rack 101a, and further, when the driving gear 303 rotates by taking the spindle 201a as the axis, the driving gear 303 rotates by the self under the influence of the arc rack 101a, the driving gear 303 is fixed on the inner side of the rotating pipe portion 302, the driving gear 303 drives the rotating pipe portion 302 to rotate, and impurities in the air filtered by the filtering net 304 are poured out.
Wherein, the air inlet blocking ring 201b is provided with a primary filter element at the air inlet 201b-1, the primary filter element is a net body, which can filter impurities in the air entering the inner side of the heat exchange cavity 102a, some impurities pass through the primary filter element, and then reach the inner side of the built-in end 302a from the heat exchange cabin along with the air flow, the filter net 304 is arranged at the inner side of the built-in end 302a, and performs secondary filtration on the impurities in the air, and the filtered impurities are remained at the inner side of the built-in end 302 a.
Specifically, the positioning tube portion 301 includes a fixed tube end 301a fixed to the outlet port 201c-1, and an expansion tube end 301b formed on the fixed tube end 301 a; the rotating pipe part 302 comprises a built-in end 302a sleeved on the inner side of the positioning pipe part 301, an extending edge 302b formed on the outer side of the built-in pipe end, and a connecting end 302c formed on the end part of the built-in pipe end; the built-in end 302a is provided with a leakage groove 302a-1 at the expansion pipe end 301b, a circular groove 302b-1 is arranged on the extension edge 302b, one end of the expansion pipe end 301b extends to the inner side of the circular groove 302b-1, and one end of the connecting pipe 202a is connected with the connecting end 302 c.
The inner wall of the fixed pipe end 301a is attached to the outer wall of the built-in end 302a, the inner diameter of the expansion pipe end 301b is larger than the outer diameter of the built-in end 302a, and therefore an annular cavity is formed between the expansion pipe end 301b and the built-in end 302a, when the driving gear 303 contacts the arc rack 101a, the driving gear 303 rotates to drive the built-in end 302a to rotate, impurities on the inner side of the built-in end 302a are filtered by the filter screen 304, and the impurities are leaked to the inner side of the annular cavity from the leakage groove 302 a-1.
Further, in this embodiment, heat exchange cavities 102a are distributed on the inner side of main pipe portion 101 in a fan shape, wherein heat exchange cavities 102a are attached to each other, an angle occupied by each heat exchange cavity 102a is 30 degrees, 80 degrees of space not occupied by heat exchange cavity 102a is reserved on the inner side of main pipe portion 101, in this space, arc baffles 101b are arranged, two ends of each arc baffle 101b are respectively attached to two heat exchange cavities 102a, wherein four air inlets 201b-1 and four air outlets 201c-1 are provided, an included angle between each air outlet 201c-1 and an adjacent air outlet 201c-1 is 90 degrees, and arc racks 101a are arranged in the space not occupied by heat exchange cavities 102a in main pipe portion 101.
The inner side wall of the fixed pipe end 301a is provided with a limiting circular groove 301a-1, the outer side of the built-in end 302a is provided with an annular limiting bulge 302a-2, and the annular limiting bulge 302a-2 can be rotatably clamped on the inner side of the limiting circular groove 301a-1 to prevent the built-in end 302a from being separated from the inner side of the fixed pipe end 301 a.
By arranging four air inlets 201b-1, four air outlets 201c-1, four connecting pipes 202a and four filtering mechanisms 300, in the process of rotating the air outlet blocking ring 201c, the air inlets 201b-1 and the heat exchange cavities 102a are corresponding in position all the time, so that air always reaches the inner side of the central portion 203 from the inner side of the heat exchange cavities 102a through the filtering mechanisms 300 and the connecting pipes 202a, the four filtering mechanisms 300 are circularly poured into the inner side of the circular ring-shaped cavity along with the rotation of the air outlet blocking ring 201c, the driving gears 303 on the four filtering mechanisms 300 are circularly contacted with the circular arc racks 101a, impurities filtered from the inner side of the built-in ends 302a of the four filtering mechanisms 300 can be circularly poured into the inner side of the circular ring-shaped cavity, and when one filtering mechanism 300 is separated from all the heat exchange cavities 102a, the corresponding air outlet 201c-1 is blocked by the circular arc baffles 101b, the problem that the air temperature of the inner side of the central portion 203 is influenced by the air outlet blocking ring-1 through the connecting pipes 202 a.
The rest of the structure was the same as in example 1.
The operation process comprises the following steps: after some impurities pass through the primary filter element, the filter screen 304 is disposed inside the built-in end 302a as the air flows from the heat exchange chamber to the inside of the built-in end 302a, so as to filter the impurities in the air for the second time, and the filtered impurities remain inside the built-in end 302 a.
In the process of rotation of the air outlet blocking ring 201c, when the filtering mechanism 300 reaches the corresponding position of the arc rack 101a, the driving gear 303 rotating with the spindle 201a as the axis contacts the arc rack 101a, and further, when the driving gear 303 rotates with the spindle 201a as the axis, the driving gear 303 self-rotates under the influence of the arc rack 101a, the driving gear 303 is fixed on the inner side of the rotating pipe portion 302, and the driving gear 303 drives the rotating pipe portion 302 to rotate, so that impurities in the air filtered by the filtering net 304 are poured out.
Example 3
Referring to fig. 1-7, this embodiment differs from the above embodiments in that: the expansion pipe end 301b is provided with a discharge groove 301b-1, the outer side of the built-in end 302a is provided with a discharge piece 305, and in the rotating process of the built-in end 302a, the discharge piece 305 rotates along with the built-in end 302a to push impurities accumulated between the built-in end 302a and the expansion pipe end 301b, and the impurities are discharged to the outer side of the expansion pipe end 301b through the discharge groove 301 b-1.
Specifically, the discharging member 305 includes a column 305a fixed to the outer side of the built-in end 302a, a sleeve 305b slidably sleeved on the outer side of the column 305a, a rubber plug 305c provided at the end of the sleeve 305b, and a spring 305d sleeved on the outer side of the column 305 a; the spring 305d is positioned between the sleeve 305b and the outer wall of the built-in end 302a, and one side of the rubber plug 305c away from the sleeve 305b is an arc surface, wherein in the process of rotating the built-in end 302a, the arc surface of the rubber plug 305c is abutted against the inner side wall of the expanded tube end 301b under the action of the spring 305d, the rubber plug 305c scrapes off impurities accumulated in the expanded tube end 301b along with the rotation of the built-in end 302a, and finally pushes out the impurities through the discharge groove 301b-1, wherein the length of the rubber plug 305c corresponds to the length of the discharge groove 301b-1, and the width of the arc surface of the rubber plug 305c is larger than that of the discharge groove 301b-1, so that the problem that the built-in end 302a cannot rotate due to the rubber plug 305c being clamped at the inner side of the discharge groove 301b-1 is avoided.
Wherein, the outer side of the upright column 305a is provided with a separation-proof groove, the inner side of the sleeve 305b is provided with a separation-proof bulge, and the separation-proof bulge is sleeved on the inner side of the separation-proof groove in a sliding manner.
Further, the number of the teeth of the circular arc rack 101a is equal to the number of the teeth of the driving gear 303, so that each time the driving gear 303 passes through one side of the circular arc rack 101a, the driving gear 303 drives the built-in end 302a to rotate for one circle, the initial position of the rubber plug 305c is located on the inner side of the discharge groove 301b-1, and each time the driving gear 303 and the circular arc rack 101a are separated, the rubber plug 305c cleans the inner wall of the expanded pipe end 301b for one circle and resets to the inner side of the discharge groove 301b-1, so as to block the discharge groove 301b-1, and avoid the problem that when the filter mechanism 300 corresponds to the heat exchange cavity 102a, external air reaches the inner side of the built-in end 302a through the discharge groove 301b-1 and the leakage groove 302a-1, and further influences the temperature of the air in the centralized part 203.
Further, the concentration part 203 comprises a concentration pipe 203a arranged at one end of the main shaft 201a, two limit rings 203a-1 arranged at the inner side of the concentration pipe, and a connecting port 203a-2 arranged at the side wall of the concentration pipe; a semi-through pipe 203b sleeved on the inner side of the concentration pipe 203a and positioned between the two limit rings 203a-1, wherein the outer side of the semi-through pipe is provided with an arc through groove 203b-1, and one side of the semi-through pipe is provided with a positioning end 203b-2; the outer side wall of the semi-through pipe 203b is attached to the inner side wall of the concentration pipe 203a, wherein the connecting pipe 202a is made of hard materials such as stainless steel, metal and the like, when the air outlet folding ring rotates, the concentration pipe 203a rotates along with the main shaft 201a, the outer side of the concentration pipe is provided with 4 connecting ports 203a-2 which are respectively connected with the four connecting pipes 202a, the positioning end 203b-2 is connected with an air inlet of a gas and air suction mixing device of the gas and steam combined cycle unit, the position is fixed and can not rotate after the connection, the opening angle of the circular arc through groove 203b-1 is 240 degrees, the part which is not provided with the circular arc through groove 203b-1 corresponds to the space position which is reserved by 80 degrees and is not occupied by the heat exchange cavity 102a at the inner side of the main pipe part 101, when one of the filter mechanisms 300 reaches the corresponding position of the circular arc rack 101a, the connection port 203a-2 connected with the connecting pipe 202a connected with the filter mechanism is shielded by the part of the semi-through pipe 203b which is not provided with the circular arc through groove 203b-1, so that the problem that when the driving gear 303 contacts the circular arc rack 101a, the rubber plug 305c is separated from the inner side of the discharge groove 301b-1, and external air enters the inner side of the semi-through pipe 203b through the discharge groove 301b-1, the leakage groove 302a-1, the built-in end 302a, the connecting pipe 202a and the connection port 203a-2 and is finally sucked is avoided.
The rest of the structure was the same as in example 2.
The operation process comprises the following steps: during the rotation of the built-in end 302a, the arc surface of the rubber plug 305c is abutted against the inner side wall of the expansion pipe end 301b under the action of the spring 305d, and along with the rotation of the built-in end 302a, the rubber plug 305c scrapes off impurities accumulated in the expansion pipe end 301b, and finally the impurities are pushed out through the discharge groove 301 b-1.
When the driving gear 303 and the arc rack 101a are separated each time, the rubber plug 305c cleans the inner wall of the expansion pipe end 301b for one circle and resets to the inner side of the discharge groove 301b-1, so as to play a role in blocking the discharge groove 301b-1, and avoid the problem that when the filtering mechanism 300 corresponds to the heat exchange cavity 102a, external air reaches the inner side of the built-in end 302a through the discharge groove 301b-1 and the leakage groove 302a-1, and further influences the temperature of the air in the concentration part 203.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an air inlet unit of gas steam combined cycle unit which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the preheating mechanism (100) comprises a main pipe part (101), a heat exchange part (102) arranged on the inner side of the main pipe part (101), and a gas exchange part (103) connected with the heat exchange part (102); and the number of the first and second groups,
the circulating suction mechanism (200) comprises a circulating shielding part (201) arranged on the inner side of the main pipe part (101), an air inlet branch part (202) connected with the circulating shielding part (201), and a concentration part (203) connected with the air inlet branch part (202).
2. The gas inlet apparatus of the gas-steam combined cycle plant as set forth in claim 1, wherein: the heat exchange part (102) comprises a plurality of heat exchange cavities (102 a) arranged on the inner side of the main pipe part (101) and heat exchange pipes (102 b) arranged on the inner side of the heat exchange cavities (102 a);
the gas exchange part (103) comprises a hot gas piece (103 a) communicated with one end of a heat exchange pipe (102 b) and a cold gas piece (103 b) communicated with the other end of the heat exchange pipe (102 b);
one end of the heat exchange cavity (102 a) is provided with an inlet (102 a-1), and the other end is provided with an outlet (102 a-2).
3. The gas inlet apparatus of the gas-steam combined cycle plant as set forth in claim 2, wherein: the hot gas piece (103 a) comprises a hot gas main pipe (103 a-1), a plurality of hot gas branch pipes (103 a-2) arranged on the hot gas main pipe (103 a-1), and hot gas ports (103 a-3) arranged on the hot gas main pipe (103 a-1);
the cold air piece (103 b) comprises a cold air main pipe (103 b-1), a plurality of cold air branch pipes (103 b-2) arranged on the cold air main pipe (103 b-1), and cold air openings (103 b-3) arranged on the cold air main pipe (103 b-1);
the heat exchange pipe (102 b) is communicated with the hot gas main pipe (103 a-1) through a hot gas branch pipe (103 a-2), and the heat exchange pipe (102 b) is communicated with the cold gas main pipe (103 b-1) through a cold gas branch pipe (103 b-2).
4. The gas inlet device of the gas-steam combined cycle unit according to claim 2 or 3, wherein: the circulating shielding part (201) comprises a main shaft (201 a), an air inlet shielding ring (201 b), an air outlet shielding ring (201 c) and a driving motor (201 d);
the main shaft (201 a) is arranged on the inner side of the main pipe part (101) and can rotate;
the air inlet blocking ring (201 b) is arranged on the outer side of the main shaft (201 a), is attached to an inlet (102 a-1) of the heat exchange cavity (102 a), and is provided with an air inlet (201 b-1);
the air outlet blocking ring (201 c) is arranged on the outer side of the main shaft (201 a), is attached to an outlet (102 a-2) of the heat exchange cavity (102 a), and is provided with an air outlet (201 c-1);
the driving motor (201 d) is arranged on the inner side of the main pipe part (101) and is in transmission connection with the main shaft (201 a).
5. The gas inlet apparatus of the gas-steam combined cycle plant as set forth in claim 4, wherein: the air inlet (201 b-1) corresponds to the air outlet (201 c-1), the air outlet blocking ring (201 c) is provided with a connecting pipe (202 a) at each air outlet (201 c-1), and the connecting pipe (202 a) is communicated with the concentration part (203).
6. The gas inlet apparatus of the gas-steam combined cycle plant as set forth in claim 5, wherein: the connecting pipe (202 a) is connected with the air outlet (201 c-1) through a filtering mechanism (300); the filter mechanism (300) comprises a filter element,
a positioning pipe portion (301) fixed to the air outlet (201 c-1);
a rotatable tube part (302) which is provided inside the positioning tube part (301) and which is rotatable;
a drive gear (303) provided on the rotating tube part (302);
a filter screen (304) provided inside the rotating pipe section (302);
the inner side of the main pipe part (101) is provided with an arc rack (101 a).
7. The gas inlet device of the gas-steam combined cycle unit according to claim 6, wherein: the positioning tube part (301) comprises a fixed tube end (301 a) fixed to the air outlet (201 c-1), and an expansion tube end (301 b) formed on the fixed tube end (301 a);
the rotating pipe part (302) comprises a built-in end (302 a) sleeved on the inner side of the positioning pipe part (301), an extending edge (302 b) formed on the outer side of the built-in pipe end and a connecting end (302 c) formed on the end part of the built-in pipe end;
the built-in end (302 a) is provided with a leakage groove (302 a-1) at an expansion pipe end (301 b), the extending edge (302 b) is provided with a circular groove (302 b-1), one end of the expansion pipe end (301 b) extends to the inner side of the circular groove (302 b-1), and one end of the connecting pipe (202 a) is connected with a connecting end (302 c).
8. The gas inlet apparatus of the gas-steam combined cycle plant as set forth in claim 7, wherein: the expansion pipe end (301 b) is provided with a discharge groove (301 b-1), and the outer side of the built-in end (302 a) is provided with a discharge piece (305).
9. The gas inlet apparatus of the gas-steam combined cycle plant as set forth in claim 8, wherein: the discharging piece (305) comprises a vertical column (305 a) fixed on the outer side of the built-in end (302 a), a sleeve (305 b) sleeved on the outer side of the vertical column (305 a) in a sliding manner, a rubber plug (305 c) arranged at the end part of the sleeve (305 b), and a spring (305 d) sleeved on the outer side of the vertical column (305 a);
the spring (305 d) is positioned between the sleeve (305 b) and the outer wall of the built-in end (302 a), and one side, away from the sleeve (305 b), of the rubber plug (305 c) is an arc surface.
10. The gas inlet device of the gas-steam combined cycle plant as set forth in claim 5 or 9, wherein: the concentration portion (203) comprises,
the concentration pipe (203 a) is arranged at one end of the main shaft (201 a), two limiting rings (203 a-1) are arranged on the inner side of the concentration pipe, and a connecting port (203 a-2) is formed in the side wall of the concentration pipe;
the semi-through pipe (203 b) is sleeved on the inner side of the concentration pipe (203 a) and positioned between the two limiting rings (203 a-1), an arc penetrating groove (203 b-1) is formed in the outer side of the semi-through pipe, and a positioning end (203 b-2) is arranged on one side of the semi-through pipe;
the outer side wall of the semi-through pipe (203 b) is attached to the inner side wall of the concentration pipe (203 a).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211404358.1A CN115717555B (en) | 2022-11-10 | 2022-11-10 | Air inlet device of gas-steam combined cycle unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211404358.1A CN115717555B (en) | 2022-11-10 | 2022-11-10 | Air inlet device of gas-steam combined cycle unit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040078704A (en) * | 2003-03-04 | 2004-09-13 | 정아라 | Heat exchanger for wasted heat and its cleaning apparatus |
| CN101498242A (en) * | 2008-01-31 | 2009-08-05 | 通用电气公司 | Reheat gas and exhaust gas regenerator system for a combined cycle power plant |
| CN103161607A (en) * | 2013-03-04 | 2013-06-19 | 西安交通大学 | Combined power generating system based on waste-heat utilization of combustion motor |
| CN104763535A (en) * | 2015-04-02 | 2015-07-08 | 北京京能未来燃气热电有限公司 | Method for improving efficiency of gas-steam combined cycle unit and air intake system |
| CA2949293A1 (en) * | 2015-12-07 | 2017-06-07 | General Electric Company | Gas turbine engine fluid cooling systems and methods of assembling the same |
-
2022
- 2022-11-10 CN CN202211404358.1A patent/CN115717555B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040078704A (en) * | 2003-03-04 | 2004-09-13 | 정아라 | Heat exchanger for wasted heat and its cleaning apparatus |
| CN101498242A (en) * | 2008-01-31 | 2009-08-05 | 通用电气公司 | Reheat gas and exhaust gas regenerator system for a combined cycle power plant |
| CN103161607A (en) * | 2013-03-04 | 2013-06-19 | 西安交通大学 | Combined power generating system based on waste-heat utilization of combustion motor |
| CN104763535A (en) * | 2015-04-02 | 2015-07-08 | 北京京能未来燃气热电有限公司 | Method for improving efficiency of gas-steam combined cycle unit and air intake system |
| CA2949293A1 (en) * | 2015-12-07 | 2017-06-07 | General Electric Company | Gas turbine engine fluid cooling systems and methods of assembling the same |
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